Decomposition numbers of the groups \(\hat{\mathcal J}_ 2\) and \(\text{Aut}(\mathcal J_ 2)\)
For the covering group \(\hat J_ 2\) and the automorphism group \(Aut(J_ 2)\) of the Janko simple group \(J_ 2\) are determined the decomposition numbers for all primes p.
scientific article; zbMATH DE number 4125659